Hi. That hard and painful lump under your right nipple may just be a breast bud, which is part of the normal changes which happen as your body begins to mature during puberty. There is a chance that the lump could be some sort of infection (cellulitis), so you may also want to have it checked by a doctor, just to be sure it's not anything serious.
i have a breast infection and im only 13. i dont get why i have one? is it normal or not? i looked at all the websistes and they all say its when you breats feed but i obviosuly dont. help please?
I'm 13 also, and I have one, so I think this is pretty normal for someone going through puberty.